Hurrah, we come to the end of the module! We started by asking why people say that it is dangerous to sleep under a tree at night. We saw in the module that trees do not produce Oxygen during the night. They only produce Carbon dioxide.
But, that is not the reason you shouldn't sleep under a tree at night, even though many people think that it is! The amount of Carbon dioxide a tree produces is extremely small! So, the Carbon dioxide won't affect you.
You shouldn't sleep below trees for other reasons: for example, animals hunt during the night and may attack you!